Mining-drill.



PATENTED MAY 21 ,.1907."

1w: HAUAXWBLL.

MINING DRILL.

APPLICATION FILED 00-1230, 1906.

, iiTZ MSGS- 1 Inventor William fihwxwdl q iiorney WILLIAM HAUXWELL, OFCANAL FULTON, OI-IIO.

MINING-DRILL.

Specification of Letters Patent.

Patented May 21, 1907.

Application filed October 30. 1906. flerial No. 341,252.

To (0Z7, zuhmn 21%; 771 011 concern:

Be it known that I, WILLIAM I'IAUXWELL, a citizen of the United States,residing at Canal Fulton, in the county of Stark and State of Ohio, haveinvented certain new and useful Improvements in Mining-Drills; and I dohereby declare that the following is a full, clear, and exactdescription of the same, reference being had to the accompanyingdrawings, making a part of this specification, and to the numerals andfigures of reference marked thereon, in which" Figure 1 is a perspectiveview showing the drill placed in proper position to drill under the veinof coal. Fig. 2 is an end view of the machine, showing the partsproperly attached and illustrating the main driving gear and feed screwsupport in section. Fig. 3 is a detached view of the hinged screw barbearing. Fig. 4 is a side view of the main driving gear and its pinionparts being broken away.

The present invention has relation to mining drills and it consists inthe different parts and combination of parts hereinafter described andparticularly pointed out in the claims.

Similar numerals of reference indicate corresponding parts in all thefigures of the drawmg.

In the accompanying drawing, 1 re resents the side members of the frame,w ich are held in proper spaced relation with reference to each other bymeans of the top and bottom caps or tie bars 3 and 4, which parts justabove mentioned when properly connected together constitute and producea rectangular frame. To the side members 1 is pivotally and adjustablyattached the feed I screw support 5 by means of the flanges 6 and theclamping bolts 7, said parts being arranged substantially as shown inFig. 1. To the front or forward end of the support 5, is attached thehinged cap 8, which cap is seated upon the flange 9 substantially asshown in the drawing. The cap 8 and the flange 9 are each provided withsemi-circular grooves which are screw threaded, and when the cap issecured in positionsaid semi-circular screw threaded grooves form ascrew threaded aperture through which screw threaded aperture the feedscrew passes. The feed screw 10 is provided with the longitudinal grooveor way 11, which longitudinal groove or way is for the purpose ofreceiving the rib 12, which rib is preferably formed integral with. thebeveled gear wheel 13. The rib 12 is for the purpose of imparting rotarymotion to the feed screw 10 when rotary mot1on is imparted to thebeveled gear wheel 13.

It will be understood that by providing the longitudinal groove 1.1 thatthe feed screw can be moved forward or longitudinally and its rotarymotion maintained during its longitudinal movement by means of the rib12. The feed screw support 5 is provided with the right angled flange orplate 14, which right angled flange is provided with the lugs or bosses15, through which lugs and plate is passed the bearing bolt 16, uponwhich bearing bolt is mounted the main drive or gear wheel 17 which gearwheel is provided with internal teeth 18, which teeth mesh with thepinion 19, said pinion being securely mounted upon a shaft, which isproperly journaled 1n the right angled plate 14, and said shaft providedwith the beveled gear Wheel 20, which beveled gear wheel meshes with thebeveled gear 13.

It will be understood that when the feed screw is rotated in onedirection it will be moved longitudinally so as to force the drill 21into the material designed to be drilled. After the drill has been fedforward the desired distance the hinged cap 8 is released by removingthe yoke 22 and the cap turned upon its hinged connection after whichthe feed screw 10 together with the drill can be removed withoutrotation. By simply removing the yoke so that it will not engage thefree end of the cap 8, said cap is then free to be turned upon itshinged connections, by which arrangement the feed screw is free to bemoved endwise without rotation. For the purpose of properly clamping thecap 8 by means of the yoke 22, said yoke is provided with a screw 22 andwhen the screw islelevated the yoke will be free to be turned upon itspivotal point. This feature is not within itself new, and I lay nospecific claim to the releasing of the feed screw to be withdrawn. Inuse and especially in mining coal it is frequently necessary to drillunder the coal and near the mine floor, and when the crank is attachedto the shaft upon which the beveled gear wheel 20 is attached the heador frame which carries the feed drill must necessarily be brought nearto the mine floor and the crank which usually is and must of necessitybe of considerable length has a tendency to come in contact with themine floor when brought into its lowermost position, and in order toovercome this objection and difficulty I provide the main gear or drivewheel 17 and elevate said gear wheel above the support 5 and providesaid wheel with internal teeth 18 by which arrangement I am enabled toimpart rotary motion to the feed screw 1.0 and at the same time hold thecrank 23 in proper elevation.

For the purpose of lengthening and shortening the crank 23 the spoke 24of the wheel 19 is slotted and the crank 23 adjustably connected in theslot and held in desired adj ustment by means of the clamping bolt 25.

It will be understood that I accomplish two purposes by the adjustmentof the crank, first to shorten the throw of the crank it necessary andsecond to increase the length of the crank when room provides, therebyincreasing the leverage of the crank.

It will be understood that I am enabled to place the feed screw 10together with the drill at any desired angle thereby providing a meansfor drilhng under the coal regardless of the angularity of the vein ofcoal. This is an important feature, owing to the fact that the coal liesin different angles with reference to a horizontal line, and by pivotingthe feed screw support 5 it can be adjusted to any angularity tocorrespond with the an gularity of the vein of coal.

For the purpose of changing the position of the support 5 together withthe different parts carried thereby in addition to the change of itsangularity, the members 1 are provided with the slots 26, which slotspermit any vertical adjustment desired 'between the top and bottom endsof said slots. It will of course be understood that the frame proper isto be held in proper position between the floor and the top of the mineand in order'to provide this, the usual pointed bar 27 having the screw28 is provided. These parts however are common and are simply shownconventionally.

Having fully described my invention what I claim as new and desire tosecure by Letters Patent, is In a mining drill, a frame, means forholding the frame in fixed position, a feed screw support pivotallyattached to the frame and ustable vertically between the ends of theframe, a feed screw carried by the support, said support provided with aright-angled plate, a main gear wheel carried by said right-angledplate, a pinion meshing with said gear wheel, and the main gear wheeljournaled above the pinion, beveled gear wheels, one of said gear wheelslocated upon the shaft having a pinion meshing with the main gear wheel,another beveled gear wheel located upon the feed screw and a crankadjustably connected to the main gear wheel, substantially as and forthe purpose specified. In testimony that I claim the above, I havehereunto subscribed my name in the presence of two witnesses.

WVILLIAM HAUXW'ELL.

Witnesses THOMAS TEMPLE, GEO. FELLMETI'I.

